9-100-9001 UWF connector assembly, universal wall fitting assembly part for polaris 280, 380,3900 models. Our pool cleaner parts UWF connectors are made of ABS material,which is not easy to be cracked and , strong and wear-resistant. The Blue and Red is Restrictor Disk in order to help water flow restrictor in case the water pressure from the booster pump is too high for the sweeper. No tools are required for easy installation, select the appropriate restrictor disk for the situation and install the pool cleaner parts UWF connector on the pool wall. The kit is a universal wall fitting, quick disconnect, pressure relief valve and restrictor disk(Complimentary tape to reinforce the connections).keep your pool cleaner working properly and your pool clean with our pool cleaner parts. Colour:White Material:plastic Package Contents: 1 set * connectors